That nice! Cheap, easy, and usable. It won't do your cold cranking starter motor amps, or the glow plugs or the intake air heater, but it'll do most everything else. And a whole lot cheaper than a DC-capable amp clamp.

I made it mainly because I'm going to remake my switch panels this winter and I want to see how much draw is on all of the circuits to see if I can use the switches I like. I've already started a list of some of the various lights see I've made.